Mozilla Firefox 18 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 18, only 32-bit builds of Firefox 18 are .http://www.mozilla.org/en-US/firefox/18.0/system-requirements/

Mozilla Firefox 13 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 13, only 32-bit builds of Firefox 13 are .http://www.mozilla.org/en-US/firefox/13.0/system-requirements/

Mozilla Firefox 19 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 19, only 32-bit builds of Firefox 19 are .http://www.mozilla.org/en-US/firefox/19.0.2/system-requirements/

Mozilla Firefox 4 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 4, only 32-bit builds of Firefox 4 are supported .http://www.mozilla.org/en-US/firefox/4.0/system-requirements/

Mozilla Firefox 10 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 10, only 32-bit builds of Firefox 10 are .http://www.mozilla.org/en-US/firefox/10.0.1/system-requirements/

Mozilla Firefox 20 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 20, only 32-bit builds of Firefox 20 are .http://www.mozilla.org/en-US/firefox/20.0/system-requirements/

Mozilla Firefox 11 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 11, only 32-bit builds of Firefox 11 are .http://www.mozilla.org/en-US/firefox/11.0/system-requirements/

Mozilla Firefox 17 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 17, only 32-bit builds of Firefox 17 are .http://www.mozilla.org/en-US/firefox/17.0a2/system-requirements/

Mozilla Firefox 12 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 12, only 32-bit builds of Firefox 12 are .http://www.mozilla.org/en-US/firefox/12.0/system-requirements/

Mozilla Firefox 7 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 7, only 32-bit builds of Firefox 7 are supported .http://www.mozilla.org/en-US/firefox/7.0/system-requirements/

Mozilla Firefox 8 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 8, only 32-bit builds of Firefox 8 are supported .http://www.mozilla.org/en-US/firefox/8.0beta/system-requirements/

Mozilla Firefox 15 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 15, only 32-bit builds of Firefox 15 are .http://www.mozilla.org/en-US/firefox/15.0beta/system-requirements/

Mozilla Firefox 14 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 14, only 32-bit builds of Firefox 14 are .http://www.mozilla.org/en-US/firefox/14.0beta/system-requirements/

Mozilla Firefox 16 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 16, only 32-bit builds of Firefox 16 are .http://www.mozilla.org/en-US/firefox/16.0beta/system-requirements/

Mozilla Firefox 5 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 5, only 32-bit builds of Firefox 5 are supported .http://www.mozilla.org/en-US/firefox/5.0/system-requirements/

Mozilla Firefox 6 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 6, only 32-bit builds of Firefox 6 are supported .http://www.mozilla.org/en-US/firefox/6.0/system-requirements/

Mozilla Firefox 21 System RequirementsPlease note that while the 32-bit and 64-bit versions of Windows Vista and Windows 7 can be used to run Firefox 21, only 32-bit builds of Firefox 21 are .http://www.mozilla.org/en-US/firefox/21.0a2/system-requirements/

Can't sync data from a Vista pc with FF 16.0.2 to 2nd pc running ...Dec 12, 2012 . I tried to sync from a Vista 32 bit pc running FF 16.0.2 to a new pc . can I update to version 17 on the older Vista pc (the origin pc) with out . Firefox Sync doesn't work from one PC to another, the Sync server sits in the middle.http://support.mozilla.org/questions/944248